Where to Find 2x6 Bathroom Runner Rug?

Q: I'd like a bath rug (runner) that spans the entire 6-foot master vanity instead of having two rugs, one in front of each sink. I didn't think that would be an uncommon guideline, but my search for a 2 x 6 bath rug has turned up almost nothing, aside from a $169 one from Restoration Hardware. I'd like to spend less on mine. I considered using an indoor/outdoor runner from Dash and Albert, but I think that would be a bad idea since those are supposed to be hand-rinsed outside instead of being thrown in the washer like a normal bath rug. Does anyone know where I may be able to find a 6-foot bath rug? (The "2-foot" dimension is optional — it can be 20 or 22 inches, too.) Thanks!